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From "Gary Gregory (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LOG4J2-2066) Generated log files starts displaying empty or null character after some time
Date Tue, 10 Oct 2017 23:07:00 GMT

    [ https://issues.apache.org/jira/browse/LOG4J2-2066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16199533#comment-16199533
] 

Gary Gregory commented on LOG4J2-2066:
--------------------------------------

Hi [~saurabhsahu],

If you can provide a failing unit test, we can likely resolve this much faster than leaving
this ticket as it is now.

Thank you!
Gary

> Generated log files starts displaying empty or null character after some time 
> ------------------------------------------------------------------------------
>
>                 Key: LOG4J2-2066
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-2066
>             Project: Log4j 2
>          Issue Type: Question
>          Components: Appenders
>    Affects Versions: 2.3
>         Environment: This happens in our performance testing environment.
>            Reporter: Saurabh Sahu
>         Attachments: logfile.JPG
>
>
> I am facing an issue in performance testing environment. When application starts logging,
log file appears good, but after some time when file grows in size, I see that it has some
kind of empty or invalid character for over 70% of the content. When I see in notepad, it
appears empty but in notepad++, it shows null chracter.
> See attached logfile.JPG
> Whenever files rollback and it creates a new file, eveything works fine but after hours
of time, I notice this. Interesting thing is, it appears those logs get converted or overwritten
to these characters as I see some hours of logs missing. 
> Below is my configuration file log4j2.json.
> {code}
> {
> 	"configuration": {
> 		"name": "Default",
> 		"properties": {
> 			"property": [{
> 				"name": "log-path",
> 				"value": "logs"
> 			},
> 			{
> 				"name": "archive",
> 				"value": "${log-path}/archive"
> 			}]
> 		},
> 		"appenders": {
> 			"Console": {
> 				"name": "Console-Appender",
> 				"target": "SYSTEM_OUT",
> 				"PatternLayout": {
> 					"pattern": "[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n"
> 				}
> 			},
> 			"RollingRandomAccessFile": [{
> 				"name": "RollingFile-Appender",
> 				"fileName": "${env:USER_INSTALL_ROOT}/applogs/ltv/ltv.log",
> 				"filePattern": "${env:USER_INSTALL_ROOT}/applogs/ltv/ltv.log.%d{yyyy-MM-dd-hh-mm}.gz",
> 				"PatternLayout": {
> 					"pattern": "[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n"
> 				},
> 				"Policies": {
> 					"SizeBasedTriggeringPolicy": {
> 						"size": "10000 KB"
> 					}
> 				},
> 				"DefaultRolloverStrategy": {
> 					"max": "10"
> 				}
> 			},
> 			{
> 				"name": "RollingFileError-Appender",
> 				"fileName": "${env:USER_INSTALL_ROOT}/applogs/ltv/errors.log",
> 				"filePattern": "${env:USER_INSTALL_ROOT}/applogs/ltv/errors.log.%d{yyyy-MM-dd-hh-mm}.gz",
> 				"PatternLayout": {
> 					"pattern": "[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %c{1} - %msg%n"
> 				},
> 				"Policies": {
> 					"SizeBasedTriggeringPolicy": {
> 						"size": "10000 KB"
> 					}
> 				},
> 				"DefaultRolloverStrategy": {
> 					"max": "10"
> 				}
> 			}]
> 		},
> 		"loggers": {
> 			"logger": {
> 				"name": "com.business.ltv",
> 				"level": "all",
> 				"appender-ref": [
> 				{
> 					"ref": "RollingFile-Appender",
> 					"level": "all"
> 				},
> 				{
> 					"ref": "RollingFileError-Appender",
> 					"level": "error"
> 				}]
> 			},
> 			"root": {
> 				"level": "debug",
> 				"appender-ref": {
> 					"ref": "Console-Appender"
> 				}
> 			}
> 		}
> 	}
> }
> {code}
> Could you please look at it and suggest if anything is wrong or causing this?



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